C# uses RSA to encrypt and decrypt files

//Encryption code, be sure to overwrite the original file, which contains my public key. Remember to overwrite my public key when you want to use it private bool encryptFile(string filename)
  {
   FileStream f;
   try
   {
    f = new FileStream(filename, , , );
   }
   catch
   {
    return false;
   }
   Random r = new Random();
   (10*(3,8));
   RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(1024);
   ("<RSAKeyValue><Modulus>w7nNT8U7kwTw8UqLk0lROxmfTRZnQrMH1QrNyUGtoeAJ3w+iH08j+h83cPWxwPoxpXm1cgCLFWtCFWY1rkQDCCLxJhUIwYTbGKTg9h0uUVfNxGiNji7dcHShd01UYpZjHCwOar1wjJD4vJqVJCk++59UUMhE9IUATuSUVpRy1bE=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>");
   //Import key   byte[] data = new byte[16];
   ArrayList con = new ArrayList();
   while((data, 0, 16)!=0)
   {

    byte[] result = (data,false);
    //(10 * (2, 7));
    (result);
   }
   //encryption   (0, );
   foreach(byte[] d in con)
   {
    (d, 0, );
   }

   ();
   return true;
}

//Decrypt the code, overwrite the original file, the return value indicates whether the decryption is successful private bool decryptFile(string filename,string key)
  {
   FileStream f;
   try
   {
    f = new FileStream(filename, , , );
   }
   catch
   {
    return false;
   }
   RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(1024);
   try
   {
    (key);
   }
   catch
   {
    return false;
   }

   byte[] data = new byte[128];
   ArrayList con = new ArrayList();
   while ((data, 0, 128) != 0)
   {
    byte[] result;
    try
    {
     result = (data, false);
    }
    catch
    {
     return false;
    }
    (result);
   }
   //Decryption   ( * 16);
   (0, );
   foreach (byte[] d in con)
   {
    (d, 0, );
   }
   ();
   return true;
}